<template>
	<view :class="{'pickerMask':visable}" @touchmove.stop.prevent="returnHandle" @click="maskClick">

		<view class="picker-box" :class="{'picker-show':visable}">
			<view class="" @touchmove.stop.prevent="returnHandle" @tap.stop="returnHandle">
				<u-tabs :list="tabList" :is-scroll="false" :current="current" @change="change"></u-tabs>
			</view>

			<view class="operate-box" @touchmove.stop.prevent="returnHandle" @tap.stop="returnHandle">
				<view class="time-box " v-if="current==0" :style="{color:themeColor}">

					{{resultDate[0]}}
				</view>
				<view class="time-box" v-else>
					<view @click="touchSelect(0)" class="time-item" :style="{color:touchIndex?'#000000':themeColor}">

						{{resultDate[0]}}
					</view>
					<view class="">
						至
					</view>
					<view @click="touchSelect(1)" class="time-item" :style="{color:touchIndex?themeColor:'#000000'}">

						{{resultDate[1]}}
					</view>
				</view>


			</view>
			<picker-view :value="pickerValue" @change="pickerChange" class="picker-view"
				:indicator-style="indicatorStyle" @tap.stop="returnHandle">
				<picker-view-column>
					<view class="picker-item" v-for="(item, index) in years" :key="index">{{item}}年</view>
				</picker-view-column>
				<picker-view-column>
					<view class="picker-item" v-for="(item, index) in months" :key="index">{{ item }}月</view>
				</picker-view-column>
				<picker-view-column v-if="days.length > 0&&current==1">
					<view class="picker-item" v-for="(item, index) in days" :key="index">{{ item }}日</view>
				</picker-view-column>
			</picker-view>
			<!-- <view :style="{color:themeColor}" >确定</view> -->
			<u-button type="primary" :custom-style="customStyle" class="mt-40 " @click="pickerConfirm">确认</u-button>
		</view>
	</view>
</template>
<script>
	export default {
		name: 'termPicker',
		props: {
			visable: {
				type: Boolean,
				default: false
			},
			defaultDate: {
				type: Array,
				default: () => []
			},
			minYear: {
				type: Number,
				default: 1990,
			},
			themeColor: {
				type: String,
				default: '#9D60FF'
			},
			startText: {
				type: String,
				default: '开始时间'
			},
			endText: {
				type: String,
				default: '结束时间'
			}
		},
		data() {
			const date = new Date();
			const years = [];
			const year = date.getFullYear();
			const months = [];
			const month = date.getMonth() + 1;
			const day = date.getDate();
			for (let i = this.minYear; i <= date.getFullYear(); i++) {
				years.push(i);
			}
			for (let i = 1; i <= 12; i++) {
				months.push(i);
			}
			return {
				indicatorStyle: 'height: 100rpx;',
				touchIndex: 0,
				year,
				month,
				day,
				years,
				months,
				days: [],
				pickerValue: [],
				resultDate: [],
				tabList: [{
					name: '按月份'
				}, {
					name: '按日期'
				}],
				current: 0,
				customStyle: {
					// 注意驼峰命名，并且值必须用引号包括，因为这是对象
					backgroundColor: '#9D60FF',
					margin: '20rpx'
				},
			};
		},
		mounted() {
			this.setDate()
		},
		methods: {
			change(index) {
				this.current = index;
				this.setDate()
			},
			returnHandle() {},
			setDate() {
				if (this.defaultDate.length > 0) {
					let date = this.defaultDate[0]
					this.resultDate = this.defaultDate
					this.setPicker(date)
				} else {
					let month = this.month < 10 ? '0' + this.month : this.month
					let day = this.day < 10 ? '0' + this.day : this.day
					let nowTime = this.year + '-' + month + '-' + day
					this.resultDate = [nowTime, nowTime]
					this.setPicker(nowTime)
				}
			},
			setPicker(date) {
				const splitVal = date.split('-')
				let year = this.years.indexOf(Number(splitVal[0]))
				let month = Number(splitVal[1]) - 1
				let day = Number(splitVal[2]) - 1
				this.pickerChange({
					detail: {
						value: this.current == 0 ? [year, month] : [year, month, day]
					}
				})
			},
			touchSelect(val) {
				let date = this.resultDate[val]
				this.touchIndex = val
				this.setPicker(date)
			},
			getDateTime(date) {
				let year = this.years[date[0]]
				let month = this.months[date[1]]
				let day = this.days[date[2]]
				if (month < 10) {
					month = '0' + month
				}
				if (day < 10) {
					day = '0' + day
				}
				this.current == 0 ? this.resultDate[this.touchIndex] = year + '-' + month : this.resultDate[this
					.touchIndex] = year + '-' + month + '-' + day
			},
			pickerChange(e) {
				const currents = e.detail.value;
				if (currents[1] + 1 === 2) {
					this.days = [];
					if (
						((currents[0] + this.minYear) % 4 === 0 &&
							(currents[0] + this.minYear) % 100 !== 0) ||
						(currents[0] + this.minYear) % 400 === 0
					) {
						for (let i = 1; i < 30; i++) {
							this.days.push(i);
						}
					} else {
						for (let i = 1; i < 29; i++) {
							this.days.push(i);
						}
					}
				} else if ([4, 6, 9, 11].some((item) => currents[1] + 1 === item)) {
					this.days = [];
					for (let i = 1; i < 31; i++) {
						this.days.push(i);
					}
				} else if (
					[1, 3, 5, 7, 8, 10, 12].some((item) => currents[1] + 1 === item)
				) {
					this.days = [];
					for (let i = 1; i < 32; i++) {
						this.days.push(i);
					}
				}
				this.pickerValue = currents
				this.getDateTime(currents)
			},
			maskClick() {
				this.$emit('update:visable', false)
			},
			pickerConfirm() {
				const {
					resultDate
				} = this
				let startTime = new Date(resultDate[0]).getTime()
				let endTime = new Date(resultDate[1]).getTime()
				let nowTime = new Date().getTime()
				console.log("resultDate=" + resultDate)
				let type = "1";
				let result = {
					data: resultDate,
					type: type
				}

				if (this.current == 0) {
					result.type = "1";
					this.$emit('confirm', result)
					this.maskClick()
				} else {
					result.type = "2";
					if (startTime <= endTime && endTime <= nowTime) {
						this.$emit('confirm', result)
						this.maskClick()
					} else {
						uni.showToast({
							title: '时间范围不正确！',
							icon: 'none'
						})
					}
				}

			}
		}
	}
</script>

<style lang="scss" scoped>
	.pickerMask {
		position: fixed;
		z-index: 998;
		top: 0;
		right: 0;
		left: 0;
		bottom: 0;
		background: rgba(0, 0, 0, 0.6);
	}

	.picker-box {
		position: fixed;
		bottom: 0;
		left: 0;
		width: 100%;
		transition: all 0.3s ease;
		transform: translateY(100%);
		z-index: 998;
		background-color: white;

		.operate-box {
			display: flex;
			align-items: center;

			justify-content: space-around;
			padding: 18rpx 30rpx;
			background-color: #FFFFFF;
			text-align: center;
			font-size: 30rpx;
			border-bottom: 2rpx solid #e5e5e5;

			.time-box {
				width: 60%;
				display: flex;
				align-items: center;
				justify-content: space-around;
				background-color: #f6f6f6;
				padding: 10rpx 20rpx;
				border-radius: 10rpx;

				.time-item {
					// display: flex;
					// flex-direction: column;

					// background-color: red;
				}
			}
		}
	}

	.picker-show {
		transform: translateY(0);
	}

	.picker-view {
		width: 750rpx;
		height: 600rpx;
		background-color: #f6f6f6;

		.picker-item {
			height: 100rpx;
			display: flex;
			align-items: center;
			justify-content: center;
			text-align: center;
			font-size: 16px;
		}
	}
</style>